addParent{
  ParentTag p=new ParentTag(this,parent);
  parents.add(p);
}
Tag{ }
isChildOf{ }
Tag{ }
hashCode{
  return (nodeId == null) ? 0 : nodeId.hashCode();
}
equals{
  if (this == obj)   return true;
  if (obj == null)   return false;
  if (getClass() != obj.getClass())   return false;
  Tag other=(Tag)obj;
  if (nodeId == null)   return other.nodeId == null;
}
getNodeId{ }
setNodeId{ }
getTagType{ }
setTagType{ }
getValue{ }
setValue{ }
getParents{ }
setParents{ }
